Asus P5A m/b AGP slot problem

[Minladar]

I have a Asus P5A m/b with a AMD K6 350 running win98SE and up untill recently ran a TNT2 PCI card in it then decided I wanted to upgrade it to use as a 2nd game PC and tryed to install a AGP GeForce2 MX400 card now it wont boot up past the PCI scan and I flashed a new Bios from 1005 to 1007 (didnt work) then to the beta ver 1010 still doesnt work, rechecked Bios settings all look ok for AGP use even pulled all cards but the AGP video card and it still just boots up past bios check to the PCI bus scan and the floppy starts running doesnt stop. I can get it to boot to a prompt with a startup disk but thats it, if i pull the AGP card it boots but not with it in can anyone help me out please.
Thanks

[Jimstep]

Do you have the video scan option in the bios set to AGP?

On the newer video cards, you may have to disable the video cache and the vga snoop (I think that is what it is called).

[Minladar]

Yea its set to the AGP/PCI setting it only give's thies options PCI/AGP , AGP/PCI also tryed disableing PCI/VGA palette snoop
also set the jumper to run AGP at 3.6 volts still no luck its realy funny how PCI works fine when AGP wont

[Minladar]

Not sure why my post was moved to Video cards and monitors as its not a video card or monitor problem the problem is with the motherboard or Bios the video card/cards works fine just not in AGP slot.::confused:

[skuz]

Make sure AGP is enabled in the BIOS first.

If it is, have you tried slowing down the AGP bus ? Using Normal instead of Turbo setting ?

Also, make sure you set the BIOS to use AGP before PCI on bootup.

[Minladar]

yep the AGP is up first and I have tryed it with Turbo on and off also set the voltage to 3.6 and set the test off to cause a 10% voltage + on the MB. At this point I think the only thing I can do is boot it with a PCI card in it and try to Update the Drivers for the AGP slot with the Asus utilitys.

[skuz]

The way I understand it, your system locks before an AGP driver could even be loaded, so booting with a PCI card and installing AGP drivers will not help.

This looks like a hardware problem : IRQ conflict probably.

[araaraara]

Try this: Tape over the last two contacts on the end(farthest from the metal plate) of the card's connector. That diables 4X AGP and makes the max 2X AGP, which is all the P5A supports.

[Kuasimodem]

Quoted from Asus website (http://www.asus.com.tw/inside/Techref/Aladin5.htm) Ali Aladdin5 M1541


M1541 incorporates AGP controller, CPU-to-PCI Bridge, memory cache & buffer controller into one highly integrated package. CPU bus frequency can now support up to 100 Mhz, and together with smart deep buffer design for CPU-to-DRAM, CPU-to-PCI, PCI-to-DRAM to improve system performance dramatically. Concurrent bus design allows for concurrent operations of PCI-to-PCI access, CPU-to-L2 and CPU-to-DRAM access. This parallelism improves system performance a step further. Memory bus is 64-bit wide for fast data throughput, and the ECC/Parity design of the interface shows that the system reliability is one of its primary concerns. The AGP 1.0 compliant interface supports up to 128 entries look aside buffer for the Graphic Address Remapping Table. There are deep read-buffer and write-buffer designed for an efficient use of memory bandwidth.Here is the source of your problems, the P5A motherboards have an AGP 1.0 slot, which will not support newer video cards which require AGP 2.0.

[araaraara]

I believe that the taping of the last two pins will make an AGP 2.0 device work in an AGP 1.0 slot, at least that's according to the installation poster that I have read for a VisionTek GF2 MX400. I was trying to put a GF2 MX400 in my dad's P5A-B. I tried two cards, but the first one didn't work at all and the second one posted and then died. I later found out that the motherboard fried the video cards because the I/O voltage was set to 4.0v instead of 3.3v.
I have a Radeon VE is working in that board right now. It installed fine with no problems.

[ppeters914]

I have an Asus P5A-B motherboard also w/ the ALi 5 chipset. It required the ALi AGP driver before my AGP card would work. This was with Win98SE and W2K Pro. The driver is available at

<http://www.ali.com.tw/eng/support/drivers/drivers_main.htm>

Try that first.


Pete